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Finding the Fourth Proportional to 869.17, 1,303.65 and 292.09

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Solution

The fourth proportional to 869.17, 1,303.65 and 292.09 is: 438.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    869.17 : 1,303.65 = 292.09 : x
  2. Step 2: Convert to fraction form
    869.17/1,303.65 = 292.09/x
  3. Step 3: Cross multiply
    869.17x = 1,303.65 × 292.09
  4. Step 4: Simplify right side
    869.17x = 380,783.13
  5. Step 5: Solve for x
    x = 380,783.13/869.17
  6. Step 6: Final answer
    x = 438.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.